Frequencies for first 10,000 rows of pap variable in nhamcsopd2004 dataset :

   pap test |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,589       95.89       95.89
        yes |        411        4.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016